/Engine/Source/Runtime/InteractiveToolsFramework/Public/BaseGizmos/IntervalGizmo.h
a new instance of the standard axis-handle Gizmo
virtual [UInteractiveGizmo](API\Runtime\InteractiveToolsFramework\UInteractiveGizmo) * AddIntervalHandleGizmo ( [USceneComponent](API\Runtime\Engine\Components\USceneComponent) * RootComponent, [UPrimitiveComponent](API\Runtime\Engine\Components\UPrimitiveComponent) * HandleComponent, [IGizmoAxisSource](API\Runtime\InteractiveToolsFramework\BaseGizmos\IGizmoAxisSource) * AxisSource, [IGizmoFloatParameterSource](API\Runtime\InteractiveToolsFramework\BaseGizmos\IGizmoFloatParameterSource) * FloatParameterSource, float MinParameter, float MaxParameter, [IGizmoStateTarget](API\Runtime\InteractiveToolsFramework\BaseGizmos\IGizmoStateTarget) * StateTargetIn )